As I build this Christmas what i had long ago planned to be the bass module of Directiva R2, one might wonder if something is cooking under the hood with the team?
Do you have a link to the article Rick?A recently posted subwoofer article made me reconsider as I discovered how easy its to do a cardioid.
Do you have a link to the article Rick?
Originally, the r2 bass module was supposed to be very modular and not be concerned with directivity. A recently posted subwoofer article made me reconsider as I discovered how easy its to do a cardioid. I have a couple of vented RS225 bass modules from an earlier design. Trying to design the cardioid indoors may be problematic with room modes involved though.
My woodshop turned into storage area with a recent visit from relatives. Am looking to prototype a couple of bass modules after the new year. @abdo123 have something in mind?
I was wondering the opposite, would stacked woofers in a large enclosure "correct" errors through resonance of their twin or should they all be enclosed/vented separately?This is a very incredible video, I wonder if someone made something similar but not for ports but for different drivers (the tweeter acting as a passive radiator for woofer or vice versa). those harmonics were insane.
I was just thinking about this, and then to read you're already thinking about it! How awesome!Originally, the r2 bass module was supposed to be very modular and not be concerned with directivity. A recently posted subwoofer article made me reconsider as I discovered how easy it is to do a cardioid. I have a couple of vented RS225 bass modules from an earlier design. Trying to design the cardioid indoors may be problematic with room modes involved though.
My woodshop turned into storage area with a recent visit from relatives. Am looking to prototype a couple of bass modules after the new year. @abdo123 have something in mind?
A couple years ago I started a very similar build with the 0.56 cu ft flat pack, Purifi 6.5X04 and Bliesma T34B, ported. I've resumed working on them again recently, but my question is, should I be dropping the Bliesma in favor of the Seas DXT? Off axis measurements of the Bliesma look pretty smooth to me but there may be something I'm not seeing.
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Ok I understand. My main question is, am I throwing away any semblance of controlled directivity by not using a waveguide tweeter?Directiva r1 uses the Seas DXT as it is a solid performer, is readily available globally and very reasonably priced. While availability may have improved, the T34B is currently about 6 times more expensive than the DXT in North America. We were already stretching the r1 budget with the Purifi woofer. Even is avaiability was not an issue, price would have kept the T34B out if consideration.
I recall the hificompass folks already have designs using the T25B with the Purifi woofer. They should be be able to tell you how they compare to the T34B. Without actually having the tweeters to compare, it is difficult to say whether the T34B is much better than the Seas. Notably, along with the flange, the cabinet, crossover and other parts play a major role In determining how the speaker performs.
Ok I understand. My main question is, am I throwing away any semblance of controlled directivity by not using a waveguide tweeter?
Thanks for the update.So sorry folks I just realized it is almost 2 monthe since I said I would get back to working on r2. The good news is I can finally say I am making progress.
Am currently doing baseline measurements with the drivers in the sealed cabinet. Am working on the crossover and like what I see so far but struggling with getting the low end to work even with significant eq. Should be about to post some results later this week. The real test for r2 is the resistive cabinet design and that is next in line.
Tis life. Keep us posted!So sorry folks I just realized it is almost 2 monthe since I said I would get back to working on r2. The good news is I can finally say I am making progress.
Am currently doing baseline measurements with the drivers in the sealed cabinet. Am working on the crossover and like what I see so far but struggling with getting the low end to work even with significant eq. Should be about to post some results later this week. The real test for r2 is the resistive cabinet design and that is next in line.
A couple years ago I started a very similar build with the 0.56 cu ft flat pack, Purifi 6.5X04 and Bliesma T34B, ported. I've resumed working on them again recently, but my question is, should I be dropping the Bliesma in favor of the Seas DXT? Off axis measurements of the Bliesma look pretty smooth to me but there may be something I'm not seeing.
If you use the flat pack cabinet the response of the T34B will not be so smooth, cabinet diffraction will affect it. You can almost eliminate this by faceting the baffle.Ok I understand. My main question is, am I throwing away any semblance of controlled directivity by not using a waveguide tweeter?